* {
    margin: 0;
    padding: 0;
    font-family: "微软雅黑", Helvetica, STHeiTi, sans-serif;
    list-style: none;
    font-size: 16px;
    text-decoration: none
}


  .liuyan{

      width: 100%;
      height: 55px;
      border: 1px dashed #4D4D4D;

  }